Chances are very slim (and if they leak they would have leaked sooner
or later anyway). Most common leaking seal reported here is rear main
seal and that can be caused by not servicing the flame trap (aka PCV
valve) annually (expensive to fix). The turbo return line also has a
high reported level of leaks when the gasket fails (cheap to fix).

Try google.com and type in "synthetic oil seals leaking"
to get a whole bunch of opinions on this topic.